Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems

doi:10.1088/1674-1056/19/12/124204

中国物理B ›› 2010, Vol. 19 ›› Issue (12): 124204-124204.doi: 10.1088/1674-1056/19/12/124204

Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems

胡响明¹, 张雪华¹, 王飞¹, 张秀²

(1)Department of Physics, Huazhong Normal University, Wuhan 430079, China; (2)Department of Physics, Huazhong Normal University, Wuhan 430079, China;Department of Physics, Xiaogan University, Xiaogan 432000, China

收稿日期:2010-04-14 修回日期:2010-05-19 出版日期:2010-12-15 发布日期:2010-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60778005).

Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems

Zhang Xiu(张秀)^a)b), Hu Xiang-Ming(胡响明)^a)^†, Zhang Xue-Hua(张雪华)^a), and Wang Fei(王飞)^a)

^a Department of Physics, Huazhong Normal University, Wuhan 430079, China; ^b Department of Physics, Xiaogan University, Xiaogan 432000, China

Received:2010-04-14 Revised:2010-05-19 Online:2010-12-15 Published:2010-12-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60778005).

摘要/Abstract

摘要： This paper proposes a novel form of multimode nonlinear interactions by using a near-resonantly dressed atomic ensemble in an optical cavity. Due to quantum interference, a pair of collective fields come into the bilinear interactions, whose strengths are proportional to the population difference between dressed states which are coupled to the collective fields. By such an interaction, it is possible to obtain perfect multimode squeezing and collective Einstein–Podolsky–Rosen (EPR) entanglement in the cavity output.

Abstract: This paper proposes a novel form of multimode nonlinear interactions by using a near-resonantly dressed atomic ensemble in an optical cavity. Due to quantum interference, a pair of collective fields come into the bilinear interactions, whose strengths are proportional to the population difference between dressed states which are coupled to the collective fields. By such an interaction, it is possible to obtain perfect multimode squeezing and collective Einstein–Podolsky–Rosen (EPR) entanglement in the cavity output.

Key words: collective parametric interaction, quantum interference, collective EPR entanglement, multimode squeezing

中图分类号: (Quantum state engineering and measurements)

42.50.Dv

42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption) 42.65.Lm (Parametric down conversion and production of entangled photons)

张秀, 胡响明, 张雪华, 王飞. Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems[J]. 中国物理B, 2010, 19(12): 124204-124204.

Zhang Xiu(张秀), Hu Xiang-Ming(胡响明), Zhang Xue-Hua(张雪华), and Wang Fei(王飞). Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems[J]. Chin. Phys. B, 2010, 19(12): 124204-124204.

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Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems

Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems

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